oj.uz

Submission #851520

# Submission time Handle Problem Language Result Execution time Memory
851520 2023-09-20T03:35:51 Z willychan Passport (JOI23_passport) C++14
6 / 100
 1111 ms 126032 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds

const int N = 200005;

struct segtree{
	vector<int> minl;
	vector<int> maxr;
	int n;
	void init(int S){
		minl.resize(4*S,1e9);
		maxr.resize(4*S,-1e9);
		n = S;
	}	
	void set(int ind,int l,int r,pair<int,int> v,int t){
		if(r-l==1){
			minl[t] = min(minl[t],v.first);
			maxr[t] = max(maxr[t],v.second);
			return;
		}
		int mid = (l+r)/2;
		if(ind<mid) set(ind,l,mid,v,2*t);
		if(ind>=mid) set(ind,mid,r,v,2*t+1);
		minl[t] = min(minl[2*t],minl[2*t+1]);
		maxr[t] = max(maxr[2*t],maxr[2*t+1]);
	}
	pair<int,int> result(int l,int r,int L,int R,int t){
		if(l==L && r==R) return {minl[t],maxr[t]};
		int M = (L+R)/2;
		if(r<=M) return result(l,r,L,M,2*t);
		if(l>=M) return result(l,r,M,R,2*t+1);
		pair<int,int> ff = result(l,M,L,M,2*t);
		pair<int,int> ss = result(M,r,M,R,2*t+1);
		return {min(ff.first,ss.first),max(ff.second,ss.second)};
	}
};


int main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int n;cin>>n;
	segtree seg[20];	
	for(int i=0;i<20;i++) seg[i].init(n);
	for(int i=1;i<=n;i++){
		int l,r;cin>>l>>r;	
		seg[0].set(i,1,n+1,make_pair(l,r),1);
	}
	for(int j=1;j<20;j++){
		for(int i=1;i<=n;i++){
			pair<int,int> ran = seg[j-1].result(i,i+1,1,n+1,1);
			seg[j].set(i,1,n+1,seg[j-1].result(ran.first,ran.second+1,1,n+1,1),1);
		}
	}
	int q;cin>>q;
	while(q--){
		int x;cin>>x;
		pair<int,int> ran = seg[19].result(x,x+1,1,n+1,1);
		if(ran.first!=1 || ran.second!=n){
			cout<<-1<<"\n";
			continue;
		}
		pair<int,int> re = {x,x};
		int ans = 0;
		for(int j=19;j>=0;j--){
			pair<int,int> ra = seg[j].result(re.first,re.second+1,1,n+1,1);
			if(ra.first!=1 || ra.second!=n){
				re = ra;
				ans+=(1<<j);
			}
		}
		cout<<ans+1<<"\n"	;
	}
	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 766 ms 123216 KB Output is correct
5 Correct 991 ms 124752 KB Output is correct
6 Correct 1111 ms 126032 KB Output is correct
7 Correct 732 ms 122600 KB Output is correct
8 Correct 544 ms 98640 KB Output is correct

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 766 ms 123216 KB Output is correct
5 Correct 991 ms 124752 KB Output is correct
6 Correct 1111 ms 126032 KB Output is correct
7 Correct 732 ms 122600 KB Output is correct
8 Correct 544 ms 98640 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Incorrect 0 ms 344 KB Output isn't correct
16 Halted 0 ms 0 KB -